Security.xml throws exception with randomwalk

When running `./bin/rwalk Security.xml`, or any other module that uses the security module, and exception will be thrown whenever the `AuthenticateSystemWrong` node is run.

```
2022-09-08T16:48:59,788 [testing.randomwalk.Framework] ERROR: Error during random walk
java.lang.Exception: Error running node AuthenticateSystemWrong
at org.apache.accumulo.testing.randomwalk.Module.visit(Module.java:369) ~[accumulo-testing-shaded.jar:?]
at org.apache.accumulo.testing.randomwalk.Framework.run(Framework.java:54) ~[accumulo-testing-shaded.jar:?]
at org.apache.accumulo.testing.randomwalk.Framework.main(Framework.java:98) ~[accumulo-testing-shaded.jar:?]
Caused by: org.apache.accumulo.core.client.AccumuloException: Authentication succeeded when it should have failed while the user exists? true
at org.apache.accumulo.testing.randomwalk.security.Authenticate.authenticate(Authenticate.java:101) ~[accumulo-testing-shaded.jar:?]
at org.apache.accumulo.testing.randomwalk.security.Authenticate.visit(Authenticate.java:40) ~[accumulo-testing-shaded.jar:?]
at org.apache.accumulo.testing.randomwalk.Module.lambda$visit$0(Module.java:301) ~[accumulo-testing-shaded.jar:?]
at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
at org.apache.accumulo.core.trace.TraceWrappedRunnable.run(TraceWrappedRunnable.java:52) ~[accumulo-testing-shaded.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[?:?]
at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?]
at org.apache.accumulo.core.trace.TraceWrappedRunnable.run(TraceWrappedRunnable.java:52) ~[accumulo-testing-shaded.jar:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[?:?]
at org.apache.accumulo.core.trace.TraceWrappedRunnable.run(TraceWrappedRunnable.java:52) ~[accumulo-testing-shaded.jar:?]
at java.lang.Thread.run(Thread.java:829) ~[?:?]
2022-09-08T16:48:59,801 [testing.randomwalk.Framework] INFO : Test finished
```

There is a log "Test finished" afterwards but it just hangs at this point and blocks.

This exception is thrown when the following case is statisfied:

https://github.com/apache/accumulo-testing/blob/ae9c46552a661c2dec132d26835cec5dd2ecbf66/src/main/java/org/apache/accumulo/testing/randomwalk/security/Authenticate.java#L83-L86

I'm not sure if there is an error in the logic that throws this exception or if there is a valid error occurring here.